Quenching as a Contest between Galaxy Halos and Their Central Black Holes
Quenching as a Contest between Galaxy Halos and Their Central Black Holes
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星系晕与其中心黑洞之间的竞争导致淬灭
DOI：
10.3847/1538-4357/ab9633
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发表时间：
2019-09
影响因子：
4.9
通讯作者：
Huertas-Compan
中科院分区：
文献类型：
--
作者：
Chen Zhu;Faber S. M.;Koo David C.;Somerville Rachel S.;Primack Joel R.;Dekel Avishai;Rodriguez-Puebla Aldo;Guo Yicheng;Barro Guillermo;Kocevski Dale D.;van der Wel A.;Woo Joanna;Bell Eric F.;Fang Jerome J.;Ferguson Henry C.;Giavalisco Mauro;Huertas-Compan
现有的星系形成模型还没有解释星系结构和星星形成活动之间的惊人相关性，特别是在关键结构图中划分恒星形成和淬火星系的倾斜和移动边界。本文使用这些和其他关系“逆向工程”的淬火过程中的中央星系。其基本思想是，半径较大的恒星形成星系（在给定的恒星质量下）由于中心密度较低而具有较低的黑洞质量。当银河系BH辐射的累积有效能量等于其晕气体结合能的1/4时，银河系进入绿色谷。由于较大半径的星系具有较小的BH，人们发现它们必须演化到更高的恒星质量以满足晕能量标准，这解释了倾斜的边界。恒星形成星系之间半径差异的一个可能原因是晕集中。恒星形成星系的演化轨迹几乎平行于绿谷边界，而这些边界随宇宙时间的侧向运动是导致星系淬灭的主要原因。恒星形成、淬灭和绿谷星系的BH标度律是不同的，大多数BH质量增长发生在绿色谷。其意义包括：恒星形成星系的半径是塑造黑洞的第二个重要参数;黑洞与它们的晕有联系，但对于恒星形成星系、淬灭星系和绿谷星系是以不同的方式联系的;自z 103以来，黑洞-晕淬灭机制一直存在。最后，我们讨论BH星系的共同演化和BH标度律的起源和解释。
Existing models of galaxy formation have not yet explained striking correlations between structure and star formation activity in galaxies, notably the sloped and moving boundaries that divide star-forming from quenched galaxies in key structural diagrams. This paper uses these and other relations to “reverse engineer” the quenching process for central galaxies. The basic idea is that star-forming galaxies with larger radii (at a given stellar mass) have lower black hole (BH) masses due to lower central densities. Galaxies cross into the green valley when the cumulative effective energy radiated by their BH equals ∼4× their halo gas-binding energy. Because larger-radii galaxies have smaller BHs, one finds that they must evolve to higher stellar masses in order to meet this halo energy criterion, which explains the sloping boundaries. A possible cause of radii differences among star-forming galaxies is halo concentration. The evolutionary tracks of star-forming galaxies are nearly parallel to the green-valley boundaries, and it is mainly the sideways motions of these boundaries with cosmic time that cause galaxies to quench. BH scaling laws for star-forming, quenched, and green-valley galaxies are different, and most BH mass growth takes place in the green valley. Implications include the radii of star-forming galaxies are an important second parameter in shaping their BHs; BHs are connected to their halos but in different ways for star-forming, quenched, and green-valley galaxies; and the same BH–halo quenching mechanism has been in place since z ∼ 3. We conclude with a discussion of BH–galaxy coevolution and the origin and interpretation of BH scaling laws.
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DOI：
10.1088/2041-8205/739/2/l44
发表时间：
2011-08
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
I. Damjanov;R. Abraham;K. Glazebrook;P. McCarthy;Evelyn Caris;R. Carlberg;Hsiao-Wen Chen;D. Crampton-D.
通讯作者：
I. Damjanov;R. Abraham;K. Glazebrook;P. McCarthy;Evelyn Caris;R. Carlberg;Hsiao-Wen Chen;D. Crampton-D.
影响因子：
4.9
作者：
Barro, Guillermo;Faber, S. M.;Hsu, Li-Ting
通讯作者：
Hsu, Li-Ting
DOI：
10.1088/2041-8205/764/2/l31
发表时间：
2012-12
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
A. Kravtsov
通讯作者：
A. Kravtsov
DOI：
10.1088/0067-0049/197/2/36
发表时间：
2011-05
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
A. Koekemoer;S. Faber;H. Ferguson;N. Grogin;D. Kocevski;D. Koo;K. Lai;J. Lotz;R. Lucas
通讯作者：
A. Koekemoer;S. Faber;H. Ferguson;N. Grogin;D. Kocevski;D. Koo;K. Lai;J. Lotz;R. Lucas
DOI：
10.1111/j.1365-2966.2008.13805.x
发表时间：
2008-08
影响因子：
4.8
作者：
R. Somerville;P. Hopkins;T. J. Cox;B. Robertson;L. Hernquist
通讯作者：
R. Somerville;P. Hopkins;T. J. Cox;B. Robertson;L. Hernquist